In vitro Studies on Branch Canker Pathogen (Macrophoma sp.) Infecting Tea

P, Mareeswaran J Nepolean; Premkumar, Jayanthi R; B, Samuel Asir R Radhakrishnan

doi:10.4172/2157-7471.1000284

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…However, only meager information is available on the biological control of tea pathogens rather than using antimicrobial novel compounds [16]. It has been reported that interaction between several tea pathogens and antagonists of bacterial, fungal, and actinomycete origin were studied in vitro through dual culture and antibiosis techniques, which revealed the pathogen growth was suppressed considerably [17].…”

Section: Introductionmentioning

confidence: 99%

Bioefficacy of Lecanoric Acid Produced by Parmotrema austrosinense (Zahlbr.) Hale against Tea Fungal Pathogens

Rajendran

Ponmurugan

Gnanamangai³

et al. 2023

Horticulturae

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Lichens are symbiotic organisms that are composed of fungal partners and photosynthetic algal partners. During the symbiotic process in lichen thallus, the fungus synthesizes certain secondary metabolites in which lecanoric acid is very important in terms of antibiotic properties. Considering the vital importance of lecanoric acid, the present study aimed to produce lecanoric acid from the thallus of Parmotrema austrosinense lichen using Modified Bold’s basal salt medium and evaluate the bio-efficacy against tea fungal pathogens. Lecanoric acid was purified and confirmed by micro-crystallization method and subsequently bioassayed against tea fungal pathogens. The results revealed that lecanoric acid registered a significant antifungal activity in terms of the growth inhibition of test pathogens. Companion systemic and botanical fungicides were found to be inferior to lecanoric acid in the percentage of growth inhibition. The inhibition rate varied among tea pathogens. Of the tea pathogens tested, tea leaf disease-causing pathogens including Cercospora theae (C. theae), Glomerella cingulata (G. cingulate), and Phomopsis theae (P. theae) showed the highest percentage of growth inhibition followed by stem and root rot diseases. The present study suggests that lecanoric acid showed an inhibitory effect against tea pathogens, which might be due to antibiotic properties and fungicidal action of lecanoric acid.

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Section: Introductionmentioning

confidence: 99%

Bioefficacy of Lecanoric Acid Produced by Parmotrema austrosinense (Zahlbr.) Hale against Tea Fungal Pathogens

Rajendran

Ponmurugan

Gnanamangai³

et al. 2023

Horticulturae

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Integrated management of branch canker disease (Macrophoma sp.) in tea under field level

Jeyaraman

Robert

2017

J Plant Dis Prot

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Revisiting non-chemical modes of diseases and pests management in tea (Camellia sinensis): A review

Bora

2022

Indian J Agri Sci

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Tea [Camellia sinensis (L) O. Kuntze] like any other perennial plantation crop is subjected to loss in biomass yield and functional quality, once exposed to beyond economic thresholds of diseases and pests load. A battery of diseases and pests are reported to badly affect the tea industry of India. Microbial antagonists and botanicals emerged as two most vibrant via-media of addressing tea diseases and pests amongst non-chemical modes, in a manner, closest to residue free production system. Authors revisited the use of microbial antagonists and botanicals through comprehensive updated analysis of breakthroughs recorded in the success of microbial antagonists-and botanicals mediated diseases and pests management in tea. Our efforts also portrays the futuristic viewpoints in terms of developments of commercial formulations of botanicals using their bioactive compounds, consortium of bioagents and fortification of botanicals with bioagents through area wide field response studies in the back drop of growing demand of organic tea, the most pressing developmental issue of tea industry.

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In vitro Studies on Branch Canker Pathogen (Macrophoma sp.) Infecting Tea

Cited by 3 publications

References 8 publications

Bioefficacy of Lecanoric Acid Produced by Parmotrema austrosinense (Zahlbr.) Hale against Tea Fungal Pathogens

Bioefficacy of Lecanoric Acid Produced by Parmotrema austrosinense (Zahlbr.) Hale against Tea Fungal Pathogens

Integrated management of branch canker disease (Macrophoma sp.) in tea under field level

Revisiting non-chemical modes of diseases and pests management in tea (Camellia sinensis): A review

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